SynthMaker

Spread Osc

Archive · 2006 11 old posts

From the original SynthMaker forum (2004–2014), with its members’ names and dates.

imekon ·

Here's the schematic for the spread oscillator:

http://www.imekon.pwp.blueyonder.co.uk/SynthMaker/spreadosc.osm

and here's a diagram:

Note I'm not giving you all the components of the Spread VSTi I created, just a couple of the core components!

The oscillator itself is a combination of the detuner and multi-osc pulled apart and turned into seven osc to give it that 'spread' or 'phat' effect.

imekon ·

Here's the spread osc itself:

I made use of wireless connectors to tidy things up.

You can see the Type: Single, Dual or Spread selects one, two or all seven oscilators.

(Am I right in thinking that the select will switch off the unused oscillators for single and dual?)

imekon ·

Here's one of the seven oscillators:

Here you can see the detuner and multi osc broken down into the pieces I needed. The extra module is the panning module which splits the stream into left and right according to the input. The value 'spread' varies from -2 to 2, so I add 2 and divide by 4 to get it in the range 0 - 1 for the panning (0 = hard left, 1 = hard right, 0.5 = center).

'Spread' also goes into detuning the osc... hmmm... should I be adding one?

imekon ·

Here's the spread knob:

This generates seven floats ranging from -2 to 2 when the knob is hard right, dropping to 0 to all outputs when hard left.

I found it a lot easier to use the range -2 to 2 rather than 0 - 4 with the panning!

imekon ·

Here's what I did to the envelope component:

I changed the knobs to sliders, dumped volume, and made it stereo.

imekon ·

The panning component is pretty simple:

Take stream and multiply by pan or (1 - pan)

cAPSLOCK ·

Very cool to share and expound. Thanks.

electrogear ·

Thankyou for this 🙂 I'm adding a fourth Oscillator to my synth Stereo Mereo, and I was thinking of doing a spread type osc. Would you mind if I used your idea? I wouldn't copy it straight off - just build on the idea of a "spread" osc.

Cheers,

Mike

imekon ·

Go ahead!

matti ·

Very cool stuff 🙂

rlahalla ·

great work imekon! 😀

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